PatentBrief

Company Portfolio

Toyota Central R&D Labs Inc

Patents indexed

1

Year range

1998

consumer_electronicssoftwareautomotiveecommerce

Key Inventors

Masahiro Hara1Motoaki Watabe1Tadao Nojiri1Takayuki Nagaya1Yuji Uchiyama1

All Patents

1

Career timeline

1 patents, in 1998

Dot size = forward citations

19981999

Hover or tap any dot to see the patent. Larger dots indicate more forward citations — a proxy for downstream influence.

US 5726435·1998

How the QR Code Works

The 1995 patent by Toyota Central R&D Labs that invented the QR code, using three distinct corner squares with a unique 1:1:3:1:1 pixel ratio to let scanners instantly find and read the code from any angle.

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